Indicator-lock



(No Model.) 3 Sheets-Sheet 1.

L. BISHOP.

INDICATOR LOCK. No. 462,194. Patented 0ot.2'7, 1891.

www www {.No Model.) 3 Sheets-Sheet 2.

L. BISHOP.

INDICATOR LOCK.

110.462,194. Patented Oct. 27, 1891.

mi nomma-nuns cn., mm'ourud.. Hummm, n. t.,

3 Sheets--Sheet 3.

(No Model.)

L. BISHOP.

INDICATOR LOOK.

No. 462,194. Patented Oo't. 2'7, 1891.

nlllllllllllllmlllullun I UNITED STATES PATENT OEEIcE.

LAMARTINE BISHOP, OF BALTIMORE, MARYLAND.

INDICATOR-LOCK.

SPECIFICATION forming part of Letters Patent No.'462,194, dated October27, 1891.

Application filed May 7, 1891. Serial No. 391,895. (No model.)

T0 all whom it may cmwern:

Be it known that I, LAMAETINE BISHOP, a citizen of the United States ofAmerica, residing at Baltimore, in the State of Maryland, have inventeda new and useful Car-Door Lock, of which the following is aspecification.

My invention has relation to improvements in locks for securing andretaining` the sliding door of a car in a closed position and forindicating whether the lock or door has been tampered with orunwarrantedly moved after being locked in a closed position; and theobject is to provide a simple, effective, and durable means for holdingthe car-door closed and for indicating the fact of whether the car hasbeen entered through the door during transportation from place ofshipment to the place of delivery.

I have fully specied and described my invention hereinafter, and havealso particu# larly pointed out and distinctly claimed the parts andcombinations of the mechanism which are my invention.

I have fully and clearly illustrated my inyention in the accompanyingdrawings,where 1n- Figure l is a side view of the lock, one of theplates of the casing being removed and showing the locking-bolt held inretracted position. Fig. 2 is a similar View taken from the oppositeside of the casing and showing the mechanism with the bolt moved to itsouter movement and in locked position. Fig. 3 is a face View of thelock, with the bolt and key-slide in retract-ed positions. Fig. 4 is alongitudinal section on the line ot' Fig. l, showing the key-slide heldback by the locking-dog. Fig. 5 is a similar view on the line y y ofFig. l, showing the plate be tween the bolt and the key-slide inposition. Fig. G is a detail of the indicating-wheels. Fig. 7 is a viewof the locking-dog. Fig. 8 is a view of the key-slide. Fig. 9 is a viewof the plate which is interposed between the bolt and lthe key-slide.Fig. l0 is aplan view of the locking-bolt. Fig. ll is a View showing thelock Xed in position on a car-body and holding the sliding door againstreverse movement, only a portion of the car-body and door being shown,these portions being deemed sufficient to intelligently illustrate theapplication of the lock.

A designates the side of a car, having the usual vertical studding l,constituting the side piece of the door-trame. In this studding isformed a'mortise 2, in which is fitted and secured the lock, arranged sothat the bolt when projected will stand against the edge of the closeddoor, as shown in the drawings, and hold the door against being slidback on its track.

B designates the casing of the lock, which incloses the mechanism on allsides, having a strong face-plate 3 provided with a bolthole 4l, akey-slide hole 5, a hole 6 for the projecting end of the locking-dog,and apertures 7, provided with glass closures S, through which theposition ot the indicators may be read. The glass may consist of asingle strip.

of mica let in a dovetail groove 9, arranged transversely across theinner side of the faceplate. rlhe face-plate 3 is extended above andbelow the casing, as shown, and provided with holes, through whichfastening-screws can be projected into the tace of the car to hold thelock in its seat or mortise, and a plate a., forming a supplementalface-plate, may be hinged to the faeeplate and have holes therein, whichtake the end ot` the key-slide and locking-dog and hold them in positionagainst accidental operation when the bolt is out and locked.

O designates the locking-bolt, which is made of a substantial piece ofmetal and arranged in the lock to slide through the aperture l andsupported in the lock on the inner face of the lower portion of thecasing. The bolt has a lug 10 in its side, which prevents the bolt frombeing pushed out of the lock beyond this point, the lug lodging againstthe face of the case and holding the bolt from farther projection. Thebolt is cored out from the rear, as shown at ll, (shown in dottedliues,) and in the core or socket is arranged a spring l2, mounted on apin 13 in the casing, and operates to throw the bolt outward when inreleased condition. In the upper face of the bolt is a recess let, whichis engaged by the nose of the locking-dog, which engagement serves tohold the bolt retracted. On the upper surface of the bolt is arranged aplate l5, provided with studs 1G, which enter holes in the casing andhold the plate in proper position. The inner edge of this plate is cntICO below the key-slide.

in the hole 5 in the face-plate and formed with a lateral end projection20, which lodges against the nose of the locking-dog when that elementis engaged with the bolt. In the inner edge'of the key-slide is a recessornotch 2l, which takes the lug on the inner face of the locking-dog andoperates to hold the keyslide in its retracted position. Onthe'Akeyslide are formed bearings 2l*, in which are zo mountedpawls 22 23,the free ends of which engage with ratchets on the wheels bearing theindicative characters, as hereinafter described. Springs 24: in the rearof the pawlsV bear with their free ends on the plate and op- 25 crate tokeep'the pawlsl in engagement with the ratchets of the respectivewheels. On a pin 25, let through the end of the casin g, is arranged acoil-spriiig 26, which serves to throw the key-slider outward whenk itis released 3o from the engagement of the locking-dog.

Abovethe rear end of the key-slide in the casingis secured a bracket 27,recessed in its under' side to' take the upper portion of the spring 26and-serves the double purpose of holdin@ the key-slide down inhorizontal position and' in conjunction with the recess in theplate l5as a seat for the said spring.

E designa-tes Ythe locking-dog. sistsA of apiece ofmetal mounted on apivot 4o 27* and having its outerv end arranged in andprojecting a shortdistance through the opening 6 to be convenient for manipulation.V

The inner end 28 of the looking-dog is bent downward and moves down tothe recesses or cut-away portions of the plate and the keyslide behindthe end of the bolt and holds the last element in locked position. Onthe face of the=lockingdog is a laterally-extended lug' 29, whichengages in the recess 2l of thekey- 5o slide and holds that element inretracted position. The locking-dog is thrown into engagement with theend of the bolt by means of a spring 30, which bears down on the end ofthe dog and tends to always keep it in po` sition for automaticengagement. In the-casing is mounted an arbor or shaft 3l, preferablyhaving bearing-surfaces of diiferent diameters, on which are mounted toturn` thereon the Wheels 31* 32, each one of whichv 6o bears on itscircumferential face certain characters, serving as dual indications ofthe registration at the place of shipment. On the inner side faces ofthe wheels are secured ratchets 33* 34, with which engage pawls 35 36,pivotally mounted in the casing to serve to hold the Wheels from turningin reverse This consistsl 1o of a plate of metal having the end arrangedThis 'condirection, substantially as shown. The ratchets on therespective'wheelsare made of different lengths, in order that if thelock is tampered with the unauthorized pei'son will have much trouble inturning the indications to the saine registration as moved from. Be-

tween thewheels 3l* 32 may be a spring-disk v The operation is asfollows: When the bolt W and key-slide are in retracted position, thenose of the locking-dog projects downward into the recess of the boltand holds-theboltl in that position, and the lug onthe forward arin ofthe locking-dog, engaging in the' recess of the key-slide, holds-thatelement in retracted position. Vhen the protruding or projecting end ofthe locking-dog is pressed down, the dog at the other'end is-lifted andwithdrawn from engagement with the bolt, which is shot forward by theaction of the spring at its rear, the forward movement of the bolt beingstopped by the lodgment of the stud in the side of the bolt againsttheinner` side of tlieface-plate of the casing. When the dog is carriedstill farther upward, the side lug on the forward arm isA moved downwardout of and below the notch in the keyslide and the slide left free to beshot forward. In this position both the bolt andy the'inspection'throiigh the' transparencies in theV face-plate, and thenrecord inade'onthe waybill ofthe car. To unlock the bolt, thelocking-dog is pressed dwn,releasing the keyslide, which is movedloutward, and the bolt is free and may be-pusliedback, together with. thekey-slide, into the casing. If the bolt is locked in its projectingposition, it can only be released by withdrawing. the locking-dog, andthis cannot be'done unless the key-slide is also released from itsprotracted position and shot forward, in which position it serves as abolt to prevent the car-door from being moved back, and then if thekey-slide ismovcd back to permit the car door to slide back or to lockthe bolt back the pawls turn the wheels and present different charactersfrom those recorded.

IOO

IIO

ISO

Having thus described my invention as required by the statute, I nowproceed to particularly point out and distinctly claim the parts,improvement, and their combinations, that I claim as my invention, asfollows:

l. In a car-door lock, the combination of a spring-actuated lockingbolt,a spring-activ ated key-slide, and a lockingdog to hold the key-slideand bolt in locked relation,.substan tially as described.

2. In a car-door lock, the combination of a springactuated locking-bolt,a spring-actuated key-slide, pawls on the key-slide, two Wheelsjournaled in the lock, having ratchets on their side faces andcharacters on their circumferential faces, pawls to hold the Wheelsagainst reverse movement, and a locking-dog to engage the key-slide andlocking-bolt, substantially as described.

3. In a car-doorlock, the combination ofthe spring-actuated key-slidehaving its forward end arranged to project beyond the face-plate andformed with a recess, pawls on the keyslide, wheels having ratchets toengage the pawls on the key-slide, and a locking-dog having a side lugto engage the recess in the keyslide and hold it in retracted position,substantially as described.

a. In a car-door lock, the combination of the spring-actuatedlocking-bolt formed with a recess in its upper face, thespring-actuatedA key-slide formed with a recess in its side edge, alocking-dog formed with a downward directed inner end to engagetherecess of the locking-bolt, and a side lug to engage the recess inthe key-slide, substantially as described.

5. In a car-door lock, the combination,With the casing having aface-plate provided with suitable apertures, of a locking-dog, akeyslide,V and a bolt, all arranged with their lugs to project throughthe apertures of the faceplate, Whereby all or either of said elementsmaybe manipulated from the exterior of the face-plate, substantially asdescribed.

6. In a car-door lock, the combination of a spring-actuatedlocking-bolt, a spring-actuated key-slide, pawls on the key-slide7 alocking-dog to engage the slide and the bolt, indicator-Wheels journalediu the lock, and ratchets on the respective wheels of different lengths,substantially as and for the purpose specified.

7. In acar-door lock, the combination, with the casing, of aspring-actuated locking-bolt, a key-slide having its end projectedthrough the face-plate of the casing, a locking-dog having its endprojecting through the faceplate, and a hinged supplemental face-platehaving apertures to iit over the projecting ends of the keyslide andlocking-dog, substantially as described.

In Witness whereof I have hereto set my hand in the presence of twoattesting Witncsses LAMARTINE BISHOP.

Arrest;

R. H. JoHNs, WM. ll. J oNEs.

